Optical lens



FIG. 1 is a perspective view of an optical lens showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is second perspective view thereof;

FIG. 9 is a cross sectional view taken along line 9-9 in FIG. 2 ; and,

FIG. 10 is a cross sectional view taken along line 10-10 in FIG. 2 . 

CLAIM The ornamental design for an optical lens, as shown and described. 